Hi guys problem on straight hair maintenance

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Last August 2008, I got my hair rebonded and last May 2010, I got it curled.. It wasnt a lot of problem since it's already been 2 years.. Now I got it again rebonded, I was supposed to have it relaxed but they said my hair was already rebonded so it must not be relaxed again,, so as they said, I got it rebonded.. Now I got a problem with hairfall.. Just want to ask how can I maintain the nice texture and appearance of my rebonded hair?? And hoe can I avoid the hairfall??